问题
单项选择题
在扑救钢结构建筑火灾时，深入内部进攻的前提条件是（）。
A、充分冷却并确认无坍塌可能
B、冷却灭火力量部署到位
C、开启排烟窗排烟
D、破拆局部结构打开进攻通道
答案
参考答案：A
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在扑救钢结构建筑火灾时，深入内部进攻的前提条件是（）。
A、充分冷却并确认无坍塌可能
B、冷却灭火力量部署到位
C、开启排烟窗排烟
D、破拆局部结构打开进攻通道
参考答案：A
| 从方框中选择合适的词或短语,并用其正确形式完成短文. | |
ears. My friend's father quickly 2._______ some bags of litter and went outside. I asked my friend, "What's going on?" My friend said that there was a truck 3._______ litter outside. "Whenever someone throws some litter in, it gives out beautiful music. 4._______ other people hear it, they'll go out with their litter and throw it in." "It's a 5._______ way to help keep our city clean," said my friend. 6._______ our environment is very important. Wherever you live, you can do something around your neighbourhood. Have you ever thrown 7._______ litter onto the ground? Have you ever drawn pictures on public walls? Have you ever spat in public? Have you ever 8. _______ trees? If your answers are "No", it means that you have already helped 9. ________ our environ  ment.It is our duty to keep our environment clean and tidy. If everyone 10._______ to protect the environment, the world will become much more beautiful. |
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| 1. How many athletes will probably take part in the London 2012 Olympic Games? A. 183. B. 204. C. 302. D. 10500. 2 . Which is the choice for Li Hua if he has an eight-day holiday to watch the opening ceremony the London 2012 Olympic Games in Olympic Stadium ? A. From 17 July to 24 July. B. From 25 July to 1 August. C. From 2 August to 9 August. D. From 9 August to 16 August. |
try one's best, as soon as, cut down, pick up, visit